CN103708306A - Programmable electrical control system of building hoist and control method of programmable electrical control system of building hoist - Google Patents

Programmable electrical control system of building hoist and control method of programmable electrical control system of building hoist Download PDF

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Publication number
CN103708306A
CN103708306A CN201310747874.9A CN201310747874A CN103708306A CN 103708306 A CN103708306 A CN 103708306A CN 201310747874 A CN201310747874 A CN 201310747874A CN 103708306 A CN103708306 A CN 103708306A
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China
Prior art keywords
control system
programmable logic
logic controller
building hoist
controller plc
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Pending
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CN201310747874.9A
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Chinese (zh)
Inventor
陈章一
宋杰
吴金岳
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Sanshang Electromechanic Manufacturing Co Ltd Jiangsu
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Sanshang Electromechanic Manufacturing Co Ltd Jiangsu
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Priority to CN201310747874.9A priority Critical patent/CN103708306A/en
Publication of CN103708306A publication Critical patent/CN103708306A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a programmable electrical control system of a building hoist and a control method of the programmable electrical control system of the building hoist. Cage compartments are controlled by a programmable logic controller to be lifted, and in the ascending and descending processes, delay control over braking is carried out through the programmable logic controller. According to the programmable electrical control system and the control method, the programmable logic controller is combined with a power frequency control system, the comfort performance of an originally-power-frequency-controlled building hoist is greatly improved, and the cost is much lower than that of a frequency-converting-controlled building hoist.

Description

A kind of building hoist electric control system able to programme and control method thereof
Technical field
The present invention relates to a kind of building hoist electric control system able to programme and control method thereof.
Background technology
At present, building hoist great majority are industrial frequency controls, and having fraction is variable frequency control.The building hoist of variable frequency control has many good qualities: 1, ride comfort; 2, to mechanical mechanism, impact little; 3 is energy-conservation.So the building hoist of variable frequency control is extensively subject to people's favor.But the building hoist cost of variable frequency control is high too many with respect to common building hoist.Can on the building hoist of industrial frequency control, add time relay, control the vibrations that brake deferred action has reduced the stopping time, but the adjustable time of time relay is not very accurate, and minimum can only be transferred to 0.1S.
Summary of the invention
A kind of building hoist provided by the invention electric control system able to programme and control method thereof, programmable logic controller (PLC) and industrial frequency control system are combined, improved greatly the traveling comfort of original industrial frequency control building hoist, and cost is significantly less than the building hoist of variable frequency control.
In order to achieve the above object, the invention provides a kind of building hoist electric control system able to programme, this control system comprises Programmable Logic Controller PLC, circuit connects overcurrent protection master cock QF1 and the voltage transformer T2 of this Programmable Logic Controller PLC, this Programmable Logic Controller PLC is connected main power source by main power source master cock KA1 with main contactor K1, this Programmable Logic Controller PLC is connected rising motor M 1 by rising master cock KA2 with contactless for hoisting K2, this Programmable Logic Controller PLC is connected decline motor M 2 by decline master cock KA3 with decline contactless switch K3, this Programmable Logic Controller PLC connects brake part by band-type brake release-push KA4.
Described brake partly comprises the brake contactless switch K5 that circuit connects Programmable Logic Controller PLC, and circuit connects the brake of brake contactless switch K5.
Described building hoist electric control system able to programme also comprises phase sequence control switch JXD.
Described building hoist electric control system able to programme also comprises the overload protection part of series connection rising motor M 1 and decline motor M 2.
Described overload protection partly comprises the first overload protective device KR1 of series connection rising motor M 1 and the second overload protective device KR2 of series connection decline motor M 2.
Described building hoist electric control system able to programme also comprises the rectifying part that connects brake part.
Described building hoist electric control system able to programme also comprises fault alarm part.
Described fault alarm partly comprises scram button and the fault-indicating lamp H4 of series connection, and described scram button comprises scram button SA8 and the outer scram button SA1 of cabinet in cabinet in parallel.
The present invention also provides the control method of a kind of building hoist electric control system able to programme, and the method includes the steps of:
Step 1, Programmable Logic Controller PLC judgement system all normal after, start;
Step 2, Programmable Logic Controller PLC detect incoming signal, if rising signals detected, carry out steps 3, if dropping signal detected, carry out steps 4, if the signal that falls detected, carry out steps 5;
If step 3 cage case does not reach upper limit, Programmable Logic Controller PLC controls rising driven by motor cage case and rises, and Time Delay Opening brake, until when rising signals disappears or cage case arrives upper limit, in Programmable Logic Controller PLC control, lifting motor stops, and time delay brake;
If step 4 cage case does not reach lower limit and falling protector does not eject, Programmable Logic Controller PLC controls decline driven by motor cage case and declines, and Time Delay Opening brake, until when dropping signal disappears or cage case arrives lower limit, Programmable Logic Controller PLC controls decline motor and stops, and time delay brake;
Step 5, brake are directly opened, the tenesmus of cage case.
The present invention combines programmable logic controller (PLC) and industrial frequency control system, has improved greatly the traveling comfort of original industrial frequency control building hoist, and cost is significantly less than the building hoist of variable frequency control.
Accompanying drawing explanation
Fig. 1 and Fig. 2 are electrical block diagrams of the present invention;
Fig. 3 is control method diagram of circuit of the present invention.
The specific embodiment
Following according to Fig. 1～Fig. 3, illustrate preferred embodiment of the present invention.
As depicted in figs. 1 and 2; the invention provides a kind of building hoist electric control system able to programme; this control system comprises Programmable Logic Controller PLC; overcurrent protection master cock QF1, phase sequence control switch JXD, voltage transformer T2; the overload protection part 101 of series connection rising motor M 1 and decline motor M 2; rectifying part 102, the brake part 103 of connection rectifying part 102, also comprises fault alarm part 104.
The second overload protective device KR2 of the first overload protective device KR1 that described overload protection part 101 comprises series connection rising motor M 1 and series connection decline motor M 2.
Described rectifying part 102 is rectifier VC1, and band-type brake release signal is carried out to rectification.
Described brake part 103 comprises the brake contactless switch K5 that circuit connects Programmable Logic Controller PLC, and circuit connects the brake (not being presented in circuit diagram) of brake contactless switch K5.
The scram button that described fault alarm part 104 comprises series connection and fault-indicating lamp H4, described scram button comprises scram button SA8 and the outer scram button SA1 of cabinet in cabinet in parallel.
As depicted in figs. 1 and 2, the control principle of the Programmable Logic Controller PLC of native system is as follows:
After overcurrent protection master cock QF1 closure, voltage transformer T2 obtains electric, and control loop has electricity, presses start button SA4, and Programmable Logic Controller PLC controls main power source master cock KA1 closure, and main contactor K1 obtains electric closure, and whole system starts normal work.
If Programmable Logic Controller PLC receives rising signals, Programmable Logic Controller PLC controls rising master cock KA2 and obtains electric, the open contact of rising master cock KA2 is closed, control contactless for hoisting K2 work, rising motor M 1 starts action, and band-type brake release-push KA4 action is controlled in Programmable Logic Controller PLC time delay simultaneously, the open contact of band-type brake release-push KA4 is closed, control brake contactless switch K5 action, brake is opened, and elevator rises.
If Programmable Logic Controller PLC receives dropping signal, Programmable Logic Controller PLC controls decline master cock KA3 and obtains electric, the open contact of decline master cock KA3 is closed, can control decline contactless switch K3 work, decline motor M 2 starts action, and band-type brake release-push KA4 action is controlled in Programmable Logic Controller time delay simultaneously, the open contact of band-type brake release-push KA4 is closed, control brake contactless switch K5 action, brake is opened, and elevator declines.
Be in operation, described Programmable Logic Controller PLC controls the work of whole system, if electric current is excessive, overcurrent protection master cock QF1 can disconnect automatically; If phase sequence is not right, the power supply that phase sequence control switch meeting QF1 cuts off main contactor K1; If generation emergency situation, presses scram button SA8 or the outer scram button SA1 of cabinet in cabinet, the indicator lamp H4 of fault alarm part 104 can be luminous; If load is excessive, the overload protective device KR1 of overload protection part 101 and KR2 can work, and the main power source of motor can be cut off.
The present invention also provides the control method of a kind of building hoist electric control system able to programme, and as shown in Figure 3, the method includes the steps of:
After step 1, Programmable Logic Controller PLC power on, initialization, whether the Qianmen, back door, the skylight that judge building hoist shut, if do not shut, cannot start, if shut, press start button SA4, Programmable Logic Controller PLC controls main power source master cock KA1 closure, and main contactor K1 obtains electric closure, and whole system starts normal work;
Step 2, Programmable Logic Controller PLC detect incoming signal, if rising signals detected, carry out steps 3, if dropping signal detected, carry out steps 4, if the signal that falls detected, carry out steps 5;
Step 3, Programmable Logic Controller PLC judges whether the cage case of building hoist arrives upper limit, if arrival upper limit, the motor M that rises 1 can not moved, jump to step 2, Programmable Logic Controller PLC continues waiting signal input, if do not arrive upper limit, Programmable Logic Controller PLC control rising master cock KA2 obtains electric, the open contact of rising master cock KA2 is closed, control contactless for hoisting K2 work, rising motor M 1 starts action, band-type brake release-push KA4 action is controlled in Programmable Logic Controller PLC time delay simultaneously, the open contact of band-type brake release-push KA4 is closed, control brake contactless switch K5 action, brake is opened, cage case starts to rise, until when rising signals disappears or cage case arrives upper limit, Programmable Logic Controller PLC controls rising motor M 1 and stops action, Programmable Logic Controller PLC controls time delay brake, cage case stops rising, jump to step 2,
Step 4, Programmable Logic Controller PLC judges whether the cage case of building hoist arrives lower limit, if arrival lower limit, the motor M that declines 2 can not moved, jump to step 2, Programmable Logic Controller PLC continues waiting signal input, if do not arrive lower limit, Programmable Logic Controller PLC judges whether anti-falling safety device ejects, if ejected, jump to step 2, Programmable Logic Controller PLC continues waiting signal input, if do not ejected, Programmable Logic Controller PLC control decline master cock KA3 obtains electric, the open contact of decline master cock KA3 is closed, can control decline contactless switch K3 work, decline motor M 2 starts action, band-type brake release-push KA4 action is controlled in Programmable Logic Controller time delay simultaneously, the open contact of band-type brake release-push KA4 is closed, control brake contactless switch K5 action, brake is opened, cage case starts to decline, until dropping signal disappears or cage case arrives lower limit, programmable controller PLC control motor stops action, Programmable Logic Controller PLC controls time delay brake, cage case stops declining, jump to step 2,
Step 5, Programmable Logic Controller PLC detect the signal that falls, and motor can energized action, and brake is directly opened, and the tenesmus of cage case, jumps to step 2.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.Those skilled in the art, read after foregoing, for multiple modification of the present invention with to substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.

Claims (9)

1. a building hoist electric control system able to programme, it is characterized in that, this control system comprises Programmable Logic Controller PLC, circuit connects overcurrent protection master cock QF1 and the voltage transformer T2 of this Programmable Logic Controller PLC, this Programmable Logic Controller PLC is connected main power source by main power source master cock KA1 with main contactor K1, this Programmable Logic Controller PLC is connected rising motor M 1 by rising master cock KA2 with contactless for hoisting K2, this Programmable Logic Controller PLC is connected decline motor M 2 by decline master cock KA3 with decline contactless switch K3, this Programmable Logic Controller PLC connects brake part (103) by band-type brake release-push KA4.
2. building hoist as claimed in claim 1 electric control system able to programme, is characterized in that, described brake part (103) comprises the brake contactless switch K5 that circuit connects Programmable Logic Controller PLC, and circuit connects the brake of brake contactless switch K5.
3. building hoist as claimed in claim 1 electric control system able to programme, is characterized in that, described building hoist electric control system able to programme also comprises phase sequence control switch JXD.
4. building hoist as claimed in claim 1 electric control system able to programme, is characterized in that, described building hoist electric control system able to programme also comprises the overload protection part (101) of series connection rising motor M 1 and decline motor M 2.
5. building hoist as claimed in claim 4 electric control system able to programme, is characterized in that, the second overload protective device KR2 of the first overload protective device KR1 that described overload protection part (101) comprises series connection rising motor M 1 and series connection decline motor M 2.
6. building hoist as claimed in claim 1 electric control system able to programme, is characterized in that, described building hoist electric control system able to programme also comprises the rectifying part (102) that connects brake part (103).
7. building hoist as claimed in claim 1 electric control system able to programme, is characterized in that, described building hoist electric control system able to programme also comprises fault alarm part (104).
8. building hoist as claimed in claim 7 electric control system able to programme, it is characterized in that, scram button and fault-indicating lamp H4 that described fault alarm part (104) comprises series connection, described scram button comprises scram button SA8 and the outer scram button SA1 of cabinet in cabinet in parallel.
9. a control method for building hoist electric control system able to programme, is characterized in that, the method includes the steps of:
Step 1, Programmable Logic Controller PLC judgement system all normal after, start;
Step 2, Programmable Logic Controller PLC detect incoming signal, if rising signals detected, carry out steps 3, if dropping signal detected, carry out steps 4, if the signal that falls detected, carry out steps 5;
If step 3 cage case does not reach upper limit, Programmable Logic Controller PLC controls rising driven by motor cage case and rises, and Time Delay Opening brake, until when rising signals disappears or cage case arrives upper limit, in Programmable Logic Controller PLC control, lifting motor stops, and time delay brake;
If step 4 cage case does not reach lower limit and falling protector does not eject, Programmable Logic Controller PLC controls decline driven by motor cage case and declines, and Time Delay Opening brake, until when dropping signal disappears or cage case arrives lower limit, Programmable Logic Controller PLC controls decline motor and stops, and time delay brake;
Step 5, brake are directly opened, the tenesmus of cage case.
CN201310747874.9A 2013-12-31 2013-12-31 Programmable electrical control system of building hoist and control method of programmable electrical control system of building hoist Pending CN103708306A (en)

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CN103967310A (en) * 2014-04-29 2014-08-06 四川五新智能设备有限公司 Safety dropping-preventing hook control system and method
CN104627768A (en) * 2014-12-09 2015-05-20 廊坊凯博建设机械科技有限公司 Construction elevator safety protection device and method
CN105129682A (en) * 2015-08-28 2015-12-09 武汉船用机械有限责任公司 Lifting platform control method
CN114162688A (en) * 2021-11-10 2022-03-11 深圳市英威腾电气股份有限公司 Control method and control device for construction hoist

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Publication number Priority date Publication date Assignee Title
CN103967310A (en) * 2014-04-29 2014-08-06 四川五新智能设备有限公司 Safety dropping-preventing hook control system and method
CN104627768A (en) * 2014-12-09 2015-05-20 廊坊凯博建设机械科技有限公司 Construction elevator safety protection device and method
CN105129682A (en) * 2015-08-28 2015-12-09 武汉船用机械有限责任公司 Lifting platform control method
CN114162688A (en) * 2021-11-10 2022-03-11 深圳市英威腾电气股份有限公司 Control method and control device for construction hoist
CN114162688B (en) * 2021-11-10 2024-02-20 深圳市英威腾电气股份有限公司 Control method and control device for construction elevator

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Inventor after: Gao Fei

Inventor after: Chen Zhangyi

Inventor after: Song Jie

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Application publication date: 20140409

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